I have both the 7D and the 5D3 also. I just went out shooting a couple days ago with my 7D slung over my left shoulder and the 5d3 over my right shoulder.
Interesting to say the least, As long as I've owned the 7d, close to 3 years, I've always found it to feel very good in the hand, loved the fit and finish and never had anything to say other than it was a great device and felt very top of the line with regard to build.
Having both, I notice the mechanical sound of the shutter is much louder on my 7D and the rear button doesn't feel quite as nice using it along side my 5d3 as it did in the days before I owned the 5d3. That being said, I don't think it's terrible, just not quite as nice as the rear wheel on the 5d3.
Of course the shutter now sounds a bit cheaper to me, although initially I thought the quieter sound of the 5d3 shutter sounded cheaper and more "toy like", I now prefer it to the click of the 7D shutter. Silent mode is altogether a different thing but I'm not comparing that.
I feel that the wheel, the tactile feel, the responsiveness and the buttons are close to that of my 5D3 but just shy of being quite on the same caliber. I've no issues with the set button on either and neither make any noise.
I have no complaints about my 7D other than it now lives in the shadow of my 5D3 whose high ISO performance and IQ is immeasurably better! Think I'm getting ready to trade my 7D for a bunch of Ben Franklins!