NewBonneville sells some football style grips that fit the 7/8 bars on the Thrux and Scram. I'm running them on my Scram, really like them.
I've had the Beston or "football" grips on my T140 for 30 years: they are more comfortable than stock"new" Triumph grips
$5 to $6 at a swap meet
When I first got my football grips they kinda hurt my hands after about 30+ minutes where I could go forever with the stock ones. Now they're fine. I guess I just needed to get used to the shape.