How do fixed freestyle bikes handle? - OR other bikes for bombing round town!

I have a similar problem, coming from mountain bikes i want something i can ride a long time but want to be able to jump and drop it. Plus i live in Sheffield so no gears will be a ball ache but i don't think anything else will be strong enough, thinking of getting a volume cutter anyway.

you could build up an internally geared hub or this or this.

the truvativ is fully functional and on the market. All mountain and Freeride. looks tight. but requires chain guide tabs.