I had a set on a 34 and they weren't a problem. They are slightly more susceptible to breaking if you hit the unsupported portion (over slide cut-out) of the sight on a barricade, etc., but I never had that problem.
If this is a competition gun, you may find that they are not as "precise" as something with a smaller front sight for longer shots (15 yds+), and you may not pick them up as fast as a sight with a wider rear notch / narrower front blade. For comp, I ultimately went with Dawson F/O front and Dawson all-black rear.
For a SD gun, the sights are the most visible sights I've used from daylight to dark (compared to meprolight, trijicon, Dawson F/O)
To all members of our Armed Forces - past, present and future - thank you for your service to our country.