I tried to mount these on a guitar with a Bigsby. But I encountered an issue I've never seen before. Some of the ball-ends were too small for the pins on the trem! The G and the High e had this issue. The rest of the strings fitted nicely. I compared to another set of these 10s value strings, and there it was the same. I should point out that the issue was with the size of the hole in the ball-end. To my eyes the ball-ends are the same size, but I didn't measure this.
Other cons:
I found myself having to retune these strings a bit more often than others, but not so much that it renders them unplayable.
Pros:
I have these on 2 guitars right now, and they sound ok. nothing spectacular. but not bad either. And considering the price, thats pretty good.
The biggest plus, is of course the price.
Conclusion:
they are great for always having a couple of sets lying around as backup. and if you want to experiment with different string gauges. (just not for Bigsbys!)
When i've used the sets I have, I'm probably going to buy them again.