We were road testing the Panasonic 100-300 and the Panasonic 14-140. Don't think either of them are worth purchasing (given the what I've got is better). Both performed better in good light and anything moving wasn't in focus... the lenses don't focus that fast although the 14-140 has the edge of the 100-300 and didn't track moving subjects too well.
So today a mixture using the Panasonic GF1 with the 14mm pancake lens and the Panasonic G3 with either of the two hire lenses.
We had lunch there but today, quite amazingly - no cake!! The food is quite good but their organisation of serving system and paying could be somewhat improved!
A good day nonetheless...