can you put this directly on a camping stove to heat the water? if so, how would it compare on the jetboil gcs with the companion cup?

Thanks for the great follow up guys. Another solution here is instant coffee. It may not be the world best cup of coffee, but I find that french presses in general don't make the best cup either. If nothing else here, I think you can safely say that coffee is an open-ended discussion here, and that there are many options available to you. I would take the time to research all the options for what fits your current gear best. Cheers

Lyric is right, but he got me thinking about your options when he mentioned the other presses. You could do the Jetboil GCS, along with the companion cup and press, or with the LiTech, another great integrated set-up that would work for a couple people or a small group (for food and coffee) would be the Primus EtaPower EF stove. I've had the multi-fuel (MF) version of this stove for years, and it's been fantastic for it's purpose in every way. I can't help but think that adding a 1 liter coffee press to the kit would make it anything but better. Just something to consider. Hope it helped.

Unfortunately the answer is No, this whole press is plastic. For a few dollars more, this Primus product can be used with direct heat: http://www.backcountry.com/outdoorgear/Primus-LiTech-Coffee-Press-Kit/PMS0047M.html also, this GSI Percolator might fit the bill for you: http://www.backcountry.com/outdoorgear/GSI-Outdoors-Glacier-Stainless-Percolator/GSI0130M.html