It's fun Adam. We do it on our communal plot (grow plants that is ::) )
We sell them from our plot (don't tell) and at our plant fayres. They take quite a bit of looking after though. Me lotty mate keeps them in biggish pots which are put in trenches which get watered. We invested in a decent cold frame this year (which I put together,nearly killed me what wi me back :P) and so we're propagating stuff right, left and centre, The frame is full of cuttings etc and we've covered the polycarb frame with that green meshing just to shade it and give it a bit more frost protection. Hoping for great things from it. We divide stuff up, take cuttings but it does get a bit addictive :)