And more expensive. The ball head and adaptor plate are around $350, then add the ball-to-gimbal side mound and we're talking about $550. Verses an all in one Wimberley side mount gimbal head for $450 (or cheaper knockoff for less).
I think I'm still opting for the MVH500 with the Kirk plate as it allows me much more versatility, less swapping heads, etc. And I can dump all my other heads that have different mounts and stick with the arca-swiss plate for everything.
I only have 3 tripods, tried to keep 2 fitted for purpose and one spare. I can go down to 2 tripods and use this setup for pretty much everything I use it for. This helps simplify my life too
Thanks again for the info, ideas, pictures, etc!