I'm just wondering if there are any concrete reasons for mine (and your) skeptisism.
The issue of the Form 5 transfer is a very real one. My interactions with the ATF in regards to trusts has been very negative. They do not like them.
I discussed some other stuff with my dealer and he had some other points but I don't remember the details 100% so perhaps it would be best for me to email him first and get clarification before I start going from memory.
The only reason to use a trust IMHO is if you cannot get CLEO signoff.