Great post laurence.
I'm going to buy a dpa to send to FOH, but I can get a great sound with a pickup/amp. In my experience the simpler the better. If u can make a mic to an amp work consitantly gig to gig, then great, but not many guys can.
It's really hard work amplifying an upright sometimes, but occasionally I get a great sound and really enjoy playing. If it's not so great othertimes I just get on with it. :-)