I have these pots with a high output (passive) Seymour Duncan pickup and they are very responsive. It really enhances the sound at every turn and I may well use these on future guitar projects as standard. I tend to use more allen key fitted knobs than push fit, though did try a spare and it was fine.
No concerns with build quality - 1. Because Fender know better than to pass off shoddy equipment. & 2. They feel well made and after two months of use show no signs of wear. I'll get to see how they feel on stage in a few weeks!
Do bear in mind that these are larger than some cheap Chinese pots and a bit of filing may be required to get them to fit correctly.