Fitted the rear Swedish army tyre/wheel to the bike this afternoon and went for a blast. First impressions are a bit slippy for the 1/2 mile and slightly strange feeling of riding on blocks and then once warmed up Ok. Did about 20 miles and by the time I got home the tyre was starting to settle down so with a few more miles will be OK. Did a couple of dry green lanes and no issue despite the front tyre still to be fitted when I do some serious offroading in a few weeks.