Originally Posted by mav67
+1. Got a Rogue before, but it couldn't carry anything.
Bit surprised at this. I've used a Rogue for years, and I've never had to leave stuff at home that I wanted to take, including gilet, arm warmers and knee warmers, spare tube, mobile phone etc. My friends have Mules, but all it means is that they carry everything in that rather than putting some stuff in jersey pockets. The extra litre would be useful in summer though, but then i just carry a bottle as well.
Having said all that, if I was going to buy a new one just for mtbing, I'd probably get a Mule. But for road use as well, I'd go for a Rogue again.