Some and i note SOME can get away with grinding. However you need to have a fecking spot on position and change the gear ratio. I "bimble" on a 75 cadance. however that is pushing a 55/11 ratio. Only due to his fancy bike fitting has a certain pebble come back and beat my time(show down next seaon folks!)
You will get some grinders list fairy, you get some spinners. get someone to look at your style.
If you but any decent suit, any decent tailor should be ablie to bring it in/take it out for you.
i used to have stunning suits fro work. looked the mutts nuts in them. All off the peg and further tailored. Looked a million dollars, cost about a million lira.