I have been in search of the ideal camera bag for years. My wife accuses me of joining "The Bag of the Month" club and threaten to put me on a 12 step program.
I realize that no bag is ideal, but what is your favorite for travel with long glass?
What is your computer bag when traveling?
What is missing from your camera bag?
The biggest combo I have to carry is a 500 f4G combined with a TC-14E II and either a D4s or a gripped D850 behind it, so not the biggest you could have.
In terms of bags I tried a lot of things, but in the end I sticked with the Lowepro system. My main backpack is an older model of the Lowepro ProTrekker, that has two detachable sidepockets and another detachable bag that can be used as a mini-backpack itself. Because the backpack also features the Street & Field connectors I can also add some of the lens cases that were mentioned above somewhere. Because the tripod holders use the same connectors, I have got two of those, because sometimes I carry a super-tele setup to be used stationary and the macro stuff, just in case I run into something interesting on the way to my destination. Despite its size its so liht and comfprtable to use that even if I don't need the full gear with me I still prefer to use the big backpack and just leace some compartments empty.
Probably the only thing I constantly miss is sufficiently big rain covers. It is nice that they have it intergrated in the backpack, but as soon as you have the tripod(s) attached it is too small already. So I use an ordinary separate rain cover instead.
I have also tried the Lens Trekker and it works great for carrying a big super-tele with the body attached. However, because I don't have opportunities to go out shooting so regularly I tend to take more different things with me to take every chance, compared to a person that is just going to a fixed location with a fixed target for may be days. That is why I stepped back from the Lens Trekker again. After loading the big gun there isn't enough room for the other stuff and if I cover it with lens puouches I can just as well take the big backpack.
While travelling by car - and for storage at home - I have a Peli case that can take all my equipment. In the car I prefer to have the stuff in there, because protection is better if something goes wrong. The backpack goes in the boot either empty, just with the tripod(s) on it or - if I go to visit a stationary place for longer (e.g. visit my friend living inside a NP here) I put other gear in the photo backpack, unpack it at the destination and then put the gear in depending on what I want to do on a day to day basis.
A computer I carry only if I go somewhere for longer. Because I am - or should I say "used to be" - a freelancing consultant I have a mobile office in a backpack anyway. So, in this case I grab this second backpack and off I go (it is an EVERKI backpack that can be used as a trolley also, can't recall the type). Thus, I don't need things like notebook compartments in my photo backpack.
And if it gets really crazy, part of my mobile office is another Peli case carrying two calibrated displays including docking station, keyboard etc. that I can use if I have to work at a customer on site for a longer period. If I go to a place privately, where I have the space to set it up and the time to use it, I sometimes take this as well, so that I can do final post processing directyl on site.
My primary backpacks (photo and office) are at least 6-7 years or even older by now, but I still see no need to change anything.