I totally agree that is is a silly debate--as was the 5D vs. the M8. Glad I missed that one LOL.
I'm trying to get my head around Jono's shooting style. I think I understand it--and its not really realistic with the G1 because the EVF overhangs the LCD at that angle making it a bit harder to try (that is with the LCD just flipped over on the back--not out to the side and tilted). So--got out my old G9 and tried (and interestingly enough--or not--shooting the same shot inside with both--there's no doubt the m43/rds sensors are SOOOOOO much better than the P & S--DR wise, etc.--maybe the G10 is that much better than the G9, but still....).
I'm thinking that the LCD on the Pen must be better optimized for that ability to shoot at different angles because the G9 was difficult to really see at the lower/fore angle that I think Jono is describing--and it has a very good LCD. Consequently (when I tried the Pen, it was raining so I didn't take it outside to try--and I was more interested in trying MF lenses with adaptors than anything else), I imagine that the Pen is quite nice for street shooting (and for things like riding, as Jono was--or just a very slim cam in a very small bag on a belt--just in case). As it is--that rarely comes up for me due to both shooting style, preference in subjects--and where and how I live day to day. For Jono's idea of shooting macros--not difficult to shoot with G1's LCD flat on back like the Pen, so that's a wash on the two from that standpoint.
I think, for those that like the 4/3rds sensor, want smaller and a VF AND can afford both, it would be a great pair. I'm still thinking I will likely buy an evolution of the Pen style from one of the mfg. down the road as I'm finding that the 4/3rds sensor works for me for a lot of my shooting these days--and the 5D, while I love output, just gets left at home quite a lot.
Diane