hi, gonna be in the market very soon for a dslr and was wondering what packs are available for riding, and if there are any with water bladder carrying ability? ideally space for a couple of lenses, and the body itself, aswell as the obvious trail tool, pump, innertube etc. any recomendations will be appreciated 😀

Most people stick their SLR in a normal riding pack, perhaps wrapped in a waterproof or t-shirt.
There is a LowePro pack that can also take a bladder, but I don't think it's bike specific as such & is pretty expensive.

I use a small 'holster' back from ThinkTank Photo called a 'Digital Holster 10' with a chest harness also from Think Tank.
I stick it on before my rucsack & the straps are discreet enough to not get in the way & you can pull it right into your chest out of the way. They do different sizes, depending on the camera body – my D80 just fits into the 10, which is the smallest one they do, but if i was buying again, I'd wanna try the 20 to see if it was more suitable.

This Kata one looks like it might do the job, sure you could get a bladder to go in it somewhere

http://www.warehouseexpress.com/buy-kata-dr-465-dps-digital-rucksack/p1024037

I've got a small crumpler that only holds the camera. I put that inside my pack (granted there's not much room left for much else, but its well protected against a light spill)

I think Dakine do a DSLR pack but not sure if there is space for trail kit and water as well…

I've also got the idea that Lezyne do a pack but can't think of it or why I'm thinking that.

and there's the SFB front pack