Hi Mickjoebill,
I'm not going to be much help save to say that I have seen a very neat set up using an Motorola/Iridium 9505 handset plumbed into a Squirrel. The New Zealand operator I'm referring to is one of the most professional that I get the pleasure to fly with and I would assume (yes I know.., never assume) that they have looked into the technicalities of this and assessed it as being safe.
You could maybe speak to Jon Rowden at AST/SSD
www.satellite-distribution.com for info. They have supplied me with my kit and have always been helpful.
Best of luck, the technology is great and has got me out of a few scrapes.
McH