Check out the sticky in the DIY forum on soldering stainless steel. Folks are getting beautiful results drilling, dimpling and soldering in their fittings. Someone was able to do it with a TC ferrule. The thread is now 100+ pages long, and I wasn't able to find that post specifically in 5 minutes of searching, but it's worth reading through anyway.
If you're fairly handy, but just aren't equipped/skilled to TIG in your fittings, it's really worth a look.