I have a set of the large Triumph "leather" bags, they work great.
I am actually looking at hard bags and easy brackets now that I've swapped to the solo seat.
If you want my barely used Triumph bags, PM an offer.

2010 EFI Speedmaster,AI Removed,Polaris Belmouth,K&N,Long TORs,Rivco Risers,a clock and a Roadster screen.