I use and abuse my boots while scouting, hunting, and at work. I work year round in Colo and am pretty abusive to my boots! I haven't had any problem with the Crispi boots I've warn. They've all withstood rough field conditions.
I really like all leather boots. They tend to hold up since they usually have less stitching. On the down side they are stiffer and heavier than synthetics. I generally cover lots of country while muley hunting. Depending upon the terrain you'll be hunting you may be doing incredible elevation gains. While I prefer leather they are generally a major chunk heavier than synthetics. I also don't like super stiff boots. If you do much archery hunting you'll find it's next to impossible to stalk quietly in stiff, heavy boots. The only time I wear taller, stiff leather boots is in deep snow.
My preference is medium weight-height hikers. They are a chunk lighter, quieter and easier for stalking, and a lot easier on your legs when hiking miles upon miles each day. Synthetics generally don't last quite as long but are a lot lighter and breath a lot better. This may be important while early season scouting and hunting.
With that said, it's usually comes down to what time of year and country are you hunting? Back to your original question....I really like my Crispis!