DPx is far from the first company that has been way behind in bringing planned products to market. Some of those other companies are still around (Spyderco was one of them, IIRC), some are not (REKAT is an example, again IIRC). Little can be said, IMO, based on delivery times of their first production, or the participation in their new forum.
And if they bring out the number of products that they are advertising now, I think they (he?) will do fine.
I just hope I'm able to buy a couple more DPx products.