be sure to set them really loose until, you have a "feel for them" and also make really...really... sure they are aligned properly...not pointing in or out. If they force you to tip your feet at an angle that is uncomfortable then your knees will complain pretty sharpish.
I'm in the "love them" camp and could'nt get on with clips as they made my little toe's numb after a while.
Funny old thing this. I have clipless on my fast fixed and tourer but my hack fixed has straps and my utility beast has gone to flats. These latter 2 get used more on the spur of the moment to do things like nipping round to the supermarket for some milk, or getting something from the chippie. In these cases I don't want to faff about putting specialist shoes on, I just go wearing whatever I happen to have on.
I have to agree. I got them and the cleat on one shoe didnt recess like the other one, so was uncomfortable to walk on. I took them back and got another pair, and they were the same. Its a shame because they were lovely to ride in.