I started the process for the SilencerShop trust back in December. Had all the info filled out that night and and received my final document before midnight.
Now, I've had it in my inbox for the last 4 months and it's been printed on my desk at home for 2 weeks now... But I plan on going to the bank on Saturday to have it finally notorized, then I'll submit a form in a month or so.
But so far, the process was super easy and fast. Could have been submitting paperwork within the next day if I'd been more diligent on my part.
I had Marc Halata do mine awhile back. He's an INGO member and a gun guy. Super cool, will do amendments for life and stuff too. Costs more (or it did then) but I was happy with it. I actually need to get ahold of him for an amendment before too long.