Uncle Dave isn't necessarily the final answer to everything!
There is no way I would carry around two of the systems. Unnecessary and overkill. And very expensive.
The PAS stands for Personal Amplification System. It was designed for each member of a band to have his own system. There are many touring bands doing just that, with tremendous success. We one and two-man acts have adapted it to our own use, and as it happens, it works great for that also.
On the Bose PAS user forums, in addition to users of all types from all over the world, several of the Bose technicians actively participate. There is all the information and help a person could every want there.
I'm not trying to convince anyone to buy a PAS, just trying to contribute.
DonM