I understand there are a lot of opinions in this world. And one of the ways to decide if a product is a fit for your application is to read the reviews. I agree this scope has some bad reviews, but it also has some good reviews. Please remember most of the reviews are people that used the scope on center fire guns not your no kick PCP. I personally own a Covenant 7 and 5. I originally bought the Covenant 5 from a recommendation of a close friend, air gunner and member here on AG. After using the Covenant 5 in a hunting application. I began to really like the scope. The glass is very clear. The radical is very busy with lots of hold over and windage. I haven't had any problems with the scope. Yes, the warranty is wishy washy. It is a life time, but if the day come you need it replaced and they stop carrying the scope. The best they will do is give you original sell price credit toward a new scope.
I fill for the sub $250 FFP its a great option out there. I would recommend it if your on a budget and wanting aa FFP scope to but on your air gun. Cabela's give you 60 days to decide if you like or dislike the scope.