I'm super interested in this device. I've had a Surface Book 2 15" for almost 3 years and have loved it.
A lot of what I do requires more than average power (music production, some vr, 3d, digital art, programming, etc.) But I don't push to extremes. I need a gpu, but not at the "intense gaming" level. The SB2 has been plenty powerful for me, and I have loved the form factor of it. I think the Surface Laptop Studio would sit in a similar sweet spot, and I love the new take on the hinged screen.
Macs aren't of interest -- I use pen and touch all the time and would hate to be without them. Other Windows laptops with more power or cheaper cost have some other compromise like an inflexible screen, but I haven't had a plain old laptop for more than 6 years and don't want to go back!
I have an iPad Pro 2021 and love it for using individual drawing and sculpting apps. But most of my work requires desktop software with multiple screen environments and an iPad just doesn't cut it.
My SB2 has been great and I probably have another year or two before I upgrade. Looking at the SLS, I see many positives and no negatives for my particular uses.