Chastity and orgasm denial discussion

Hi guys, We’ve finally had some serious talks about my locked boy (@Thatguyontheinternet) getting a PA piercing. We’re planning to start with a 10 gauge and then stretch it out to at least an 8 gauge once the wound heals, so he can use a PA cage later on. Here’s what I need to know: I really like the look of a barbell better than a captive bead ring – if we choose the barbell, will he still be able to wear his MM JB while it heals, or does he have to stay out of any cage? Thanks in advance!