As long as the EN 417 thread (7/16" x 28 UNEF thread) fits, I think it should work. However, I have only used the Primus so far and therefore don't know 100%

Hello Yep, we had the grip tongs with us. Greetings

No. There is no gas cartridge included in the delivery. Gas cartridges are also available from Galaxus. Costs less than CHF 10.

One of our partners sells this article: Primus Crimp Griffzange

According to our distributor, this is the 2.3l-version. Thanks for the hint :). We'll add this information asap.