I use the Dynafit TLT Comfort bindings routinely. To answer your questions:
> I wonder if these are intended for Touring
Yes, they are definitely an alpine touring binding, and excel at skinning/touring
> Can they be used for 'regular' on/off piste skiing?
Sure, the heels lock down like any other AT binding, but keep in mind they are built to be extremely light. I'd be hesitant to regularly bash them in the bumps at a resort, though I may be simply more cautious than most.
> Can I use them with any ski boots (not Dynafit)?
No. They can only be used with Dynafit-compatible boots (though not necessarily Dynafit brand ones. I use Garmont boots, for example).
>How good they are, e.g. as compared to Marker Jester?
The Jester is an alpine-only binding (no tour feature). Do you mean the Marker Duke? The Duke is an AT binding, but at the opposite end of the spectrum from the Dynafit. It is primarily intended for resort and slackcountry touring, given its very heavy weight. The Duke weighs 5 lbs. 7 oz., the TLT Comfort weighs 1 lb. 10 oz.