Very pleased with your service. We have bought multiple Gipron pole sets so far, and are very happy with the products and your after sales service.
On the products itself:
310 Aluminium: I have been using them for years for trail running, but also for summer alpinism, and the quality is outstanding, they are super light, small pack size, and sturdy enough for use in the mountains.
310 Carbon: My partner just switched to the aluminium version, as on her carbon ones the tips have just broken off multiple times, and are just too fragile for trail running in the mountains (no mountaineering, only running with a pack in summer and winter).
We really do like your approach to be able to buy spare parts in case there's a problem with the poles. Instead of always having to buy new poles you can just replace the defective part and keep on using your favourite set of poles! So keep up the good work!