I'd seen people talk about that (or snorkel removal at least) on triumphrat.
Basically I'm trying to work out whether all bikes sound like sewing machines without a fat 'zorst or just mine.
I'd like to get a better note, but without more idle noise as I don't want to annoy my neighbors - and I already have a disadvantage due to the acoustics of where the bike is parked.
I've also discovered another cheap(ish) exhaust idea by using shorty mufflers. Keeps the original vibe but shortends the back a little... don't know how it would work with a full rear 'guard though.