I am on my 3rd week on my BVC. No issues. I get FAR fewer dry/burned hits off a BVC when I chain vape. Like under stress, at the bar, or bored. Which works out to 80% of my vaping. The other 20, I am sleeping.
However, as with all replaceable coils I have come across - there is the manufacturing consistency issue. I can see myself trying to rebuild one. Versus a dual-coil. Which I simply toss in a drawer and try again.