I bought a gas glue gun from the retailer you have found. This was after years of making do with a so-so corded electric gun from Screwfix. I would not trade the cordless gas gun for any corded model now - it is so much more convenient to use without being hitched to the power socket.
I can’t really fault it, although sometimes it takes quite a few clicks of the button to ignite.
Glue stick wise, I am still using up a big quantity I bought from Screwfix, I think, years ago. I got a mix of clear general glue sticks and some white ones for wood. TBH, I am not sure it makes a lot of difference for many applications, although I do tend to swap them over as required.
My main applications are:
- cardboard box construction, either for sending stuff (eg eBay sales) or for storing various workshop and other things around the house; eg I made a cardboard sectioned box for the belts for my large sander and modified some cardboard boxes (from the Wine Society!) for my bandsaw blades, etc etc
- making templates for eg alcove shelves, where I scribe a strip of say 6mm mdf to each side, then join in place with hot-glued corner pieces and cross braces if necessary - then you can use the template as a routing template, either hot-glued or clamped to the workpiece.
- yes, you can hot-glue a template to the workpiece for routing on the router table; it will hold more than enough, so use it sparingly, otherwise the template is hard work to remove.
Is the glue capable of being permanent? I imagine it is - none of my boxes have failed. The only thing to bear in mind with woodworking is that the glue tends to be fairly thick unless you bond it very quickly when very hot, so you can get a noticeable gap between the pieces being joined.
Hope that helps
Cheers