MT10 and Full Exhaust mpg

Hello yall,

Im considering a new mt10 for my 600 mile weekly commute. I know the bike is not the best for mpgs but I cant bear having a boring bike as a commuter and am willing to pay for gas for something interesting for my daily commute.

I do like having an aftermarket exhaust on my bikes but Ive noticed, through some research, that this seems to significantly impact mpg to the point where it might be better to leave it stock for acceptable mpg.

Id like to hear some advise on this. If you were in my shoes, and planning on logging a lot of miles on the mt10, would it be better to leave it stock or is the mpg impact minor enough where it would still make a good daily rider with an aftermarket exhaust?

Thanks