I do a lot of high removals also.
I also use robbo bushkill bee vac with the screened shim system. It's a little bit of a hassle, but it doesn't weigh much so I just carry it up the scaffolding or ladder and set it up where ever I need it.
I love how easy it is to recombine the bees when finished. You just remove the top cover of the bushkill bee-vac leaving the shim with the screen in place attached to your vacuum boxes. Set your boxes of brood on top, put their cover on, and pull the shim.
If I don't have too many boxes I try to recombine the bees at the jobsite, take them home and open the bee-vac entrance. I then wait 3 days and pull the empty bee-vac boxes off, and switch them to their regular bottom board and cover.
Ingenious system Rob came up with, love it.