Yes, I am interested what you think of the pink stems Nubs. I tried browns with Sprit's 68g springs. It is pretty impossible to feel the bump, but the key fell away pretty nicely once you hit the bump. It felt a little bit like light blacks with a hollow bottom (if that makes any sense). I am currently building clears with 62g. I need to find a way to get some pinks. Maybe pinks with 65g? 
I'm thinking it will probably end up being 62g springs with it...and I hope I don't ruin a bunch of the tops trying to pop them off. The ABO studio tops are a bit more brittle. You can feel the bump right now, but it's not the best. I'm typing this response on them and they feel almost a little crunchy if you hit them at the wrong angle. I think the tactile legs may not be long enough or it could just be that they're so new and the legs not being lubed isn't helping. I'm hoping some lube on the legs and a lighter spring makes me really like them.
They could also just need some breaking in. I seem to remember my Das Keyboard with Browns had a little bit of that crunchy feel when I first started using it. I'm sure one they're broken in a little or lubed up, they'll be a lot better. As it is now, I'm typing on them harder than I would on my Ghost Blacks board because of how crunchy they are.
So I'll make some changes in the "tuning" and play around with it a little, then do a review with my verdict.
