I've only been in Emit twice, both time with Mick and Mez
I'd claim it was only to relieve the boredom when I was off work with my appendix last year but I actually bought a cable from them so I can't[1]
Otherwise I wouldn't touch them either.
As for P-Bs I've seen a few in my time and they may be built so you can't easily swap bits about but in general, those I have seen have been well put together and seem to last quite well.
[1] I didn't go there to get it but I did need one and they happened to have one for a quid so I would have been daft not to buy it.