Not bad! One of these days...I prefer linear switches, but Blues can be nice from time to time. Favorite clicky switch is a buckling spring though...it's just classic. I feel like the tactile point is high on a Topre so it wouldn't be like MX-Brown, which I wasn't too crazy about. All my boards have MX-Red either stock or 'ghetto' converted from vintage MX-Black using blue/brown springs and all with o-ring dampeners. The board I'm typing on now has vintage black stems w/ blue springs, and it's hard to tell the difference with my other that has vintage black stems and brown springs - if there is a weight difference in springs between brown and blue it has to be less than 2g. Reds are I actually liked MX-Black overall as I used an older Cherry board for a while but I ultimately preferred something lighter. The board you got has the lightest actuation force available then (I wasn't even aware that an all 30g board existed, at least not in ANSI layout anyway), so you'll have to post your impressions here when you've had some time with it. Seems like it will be lighter than MX-Red/Blue/Brown. I suspect I'd get the 45g or variable weight version of the 87U when I pick one up...30g uniform sounds too light for me.
I have my Poker set up with blue stems + black springs just for fun because I had those extra, so it could be consider a some-what 'ghetto' MX-Green. I don't use it on the regular, but I think I still like stock blues better. Buckling spring is still better than both IMO even though it is heavier, similar to MX-Black in required force. They're just fun to type on for some reason.