P.P. I'm not sure if its a lemon, so much as it just clogs very quickly. When I field strip it, clean it, and reassemble, I can pump out a liter in about 30 secs, which is very reasonable imo. However, by the time I get to the 5th liter, it takes me 5 mins. It still pumps, and it still filters, but it just does it soooo slow. And hence, i re-strip, reclean, get back to the fast pump rate for a few more liters and repeat. Maybe it was the river I was pumping from, who knows? But I did use a prefilter hoping I would catch most of the silt that would clog the ceramic core, but to no avail. Either way I've moved on to better, faster and lighter options.
RK, the best thing to do is get a collapsible nalgene cantene (the 1 liter one). They are lightweight, pack down real small, and have a wide mouth suitable for steripen use. Just treat in there, and transfer to your bladder. It'll still be lighter and faster than the miniworks.