Gave the 10-22 a workout that day.
People must have thought I was nuts, 20D 10-22, 1DSmkII 24-70, 1DmkIIN 100-400 and the LZ5.
I think my decision to put the polariser on the 24-70 might have been a mistake, these 10mm shots could have done with it too.
There goes another £100 for a decent circ pol filter ...