I thought the last thing, and slowly a lot of my buddies are converting...
With the different tanks it's actually not bad. For me I learned where to put the bolt snap in relation to the valve opening which allows for proper orientation, and I use stage straps, so they are set to one length and the cam bands align right for length every time. My straps are long, so if they're too short I just put them as short as I can and they ride a bit farther down, but no biggie.
I never had the awkward phase, but I took my time and did my research getting set up before hand. I was familiar with the transpac, so knew where I wanted the straps to fit and everything, so that was easy, and the hardest thing is getting the tanks aligned right, which took FOREVER, but isn't all that awkward. I took a buddy, had him put a heavy weight belt on in the pool and hovered next to him. Wrote on a slate either up or down, or rotate in or out until I got one tank where I wanted it, then mimicked it on the other side. Did this so I could be without exposure protection and take the bottles on and off without much buoyancy change. Also did it with AL80's, so that helped too.
I have since made a lot of adjustments to my Nomad though, but those were mainly due to addition of drysuit and having to lengthen the shoulder straps a little for D-ring placement. Trying to switch to ring bungees for personal preference. Think that was about it... Oh and switched the pull dump plug thing because I couldn't find it with gloves on since I switched the inflator to the bottom
