Is this one any good? Lately, my thumb has constantly got a cut on it when i bowl, and i haven't really found a solution using plaster, so i thought about this one.

Anyone have any experiences?

Got one. You will have to increase the size of your thumbhole to use it.  
I personally do not like it at all. I have been using Tom Thumbs. They are worth the extra cost on a ball you intend to keep plus you can change the thumb size if your thumb swells or shrinks.

Also, you should get someone that understands thumb pitches to check your thumb pitches.