I have a Skrama from a pass-around on another forum. The knife is definitely outside the range of what I normally use, but I came away pleasantly surprised by what it could do and how it was able to do it.
I spent about 6-7 hours one cold January winter day in New Jersey building a small dome shelter, processing tinder for a fire, carving stakes, creating a bow drill set, etc. Except for finer carving tasks, the Skrama worked very well. No matter the grip position, the handle felt comfortable and secure. There was almost no hand fatigue, in spite of the fact I crammed a lot of activities into a short period of time. When using the leather dangler sheath it carries effortlessly on a belt; I trekked almost 2 miles up hilly terrain, yet it never felt heavy or cumbersome. I didn't have a chance to do any food prep or game processing though, so I don't know how it would fare for those tasks.
The spine is not sharp, which is a negative for me. It does take some getting used to, at least if you don't generally uses knives larger than 5", but the learning curve wasn't quite as step as it might seem. All-in-all, the Skrama is a unique blade that doesn't have the typical drawbacks one assumes a nonstandard cutting tool might have. I may purchase one for my personal collection.