Assuming the cuts are one of the standard ones (and the sights are for that cut...) you should have no issues with grabbing a lower set of sights.
Same here ... If S&W doesn't or won't offer 'normal' sights (tritium or otherwise) for the 10mm M&Ps, the aftermarket will likely catch-up and do it.Picked up my new M&P 10mm today, and the rear cut is much narrower then the standard. Front appears to be slightly narrower then my other M&P's.
I don't intend to put optics on mine and would also like to find replacement sights for the stock ones.