I have 61.5, 72.7, 110, and 119 all on separate dishes (I'm in a woods, with tall trees) on a DPP44 switch with a VIP622, and it all works fine.
It almost always picks sat 72 for most channels. My SD locals are on 110 however, and my HD locals are on 61.5. I've been thinking about removing 119 from the mix, as I believe 72 is a complete duplicate (plus more) of 119 sat.
Added 11:35am: Ok, I just went through every channel I have with AT250, Locals, plus Platinum to look at which sat they were locked to right now. I discovered that the only channels presently using the 119 sat, are the Audio, CD, and Sirius music channels. Those are also on 72.7 sat, so I'll disconnect 119 sat for sure shortly. There are maybe 10 channels other than my SD locals, that decided to lock to 110 sat. Almost ALL other channels (with the exception of the above music channels) are presently using 72.7 or 61.5