I have some Jackroo cycling kit. 2 jerseys, 1 pair of bib shorts and a pair of cycling shorts. A local charity ride that I've been involved in uses Jackroo for the ride-themed kit.
The items I have are good quality and held no surprises regarding fit. I would say the fit is similar to the Pearl Izumi Quest line -- keeping in mind the items I have are the 'club fit' not the 'race fit' which I assume would be quite a bit smaller.