Ah! You're hooked :lol:
I can't help on these pickups, but I thought I'd just say you're not the only one :D
I went through the same thing with my Baja Tele - quite liked the original pups but, having started on BKPs, I had this nagging doubt that maybe they would be "better" in some way... Eventually I went for it and it has turned out superbly - almost taken over as my #1 now. For me, in this particular guitar, it was a stunning improvement - but that doesn't guarantee it will be next time...
I've got the same thing going on with another tele I acquired recently, the pups do a job, but...
I'm likely to go for the same ones, so I've got the option of swapping existing pups to check it out this time, but it's still a "why am I considering this?" dilema at the moment.
My gut feeling (from my experiences) is that if you're in a "my SDs are OK" situation, you won't be disappointed if and when you do change. But if you already love the performance of your existing pups, then it's a bit more of a gamble...
Hopefully someone's done the actual switch you're contemplating and can help you out more :D
