I have Bilstein's HD and Eibach pro-kit springs. The ride is a little harsher but performance is 2 times better so its definitely worth it. I think this combination makes your car handle better than with Bilstein sports because they have the same compression ratio but HD's are longer so they are compressed more with lowering springs. And yes i checked this combination is acceptable and doesn't wear out the shocks faster.
Bilstein shocks, eibach pro-kit springs, Remus exhaust, stage 3 intake manifold,Stage 2 AA tune, BMW Short shift kit.