I've used this capo on two separate semi-acoustic and acoustic guitars. One of them, a more low-action Fender CD-140 and another, way older and higher action Yamaha. Both guitars handle well with the capo and the sounds are not overly restricted. It does however sometimes require a slight bit of diagonal tilt to press on all strings equally. This is only on some selected frets, so might be a "guitar issue".
Would recommend as a purchase for any intermediate - advanced guitarist. Not the best, but will suit for any purpose in that range.
Thus I've given it 5 stars for me.