From the reading around I've done, these springs (specifically, the the spring rate and length) seem most appropriate for giving the car sportier handling without making it painful to drive on regular roads everyday.

I am curious, though: everything I have read online says that using lowering springs with stock struts is a bad idea and will cause excessive wear. I'm not really certain why that would be the case (assuming a strut is linear in its dampening force, at least), but if it is, what would be an appropriate pairing to go with these?

I ask because it seems like these spring would end up being to long to pair with any of the coilovers which are readily available on the market (which themselves come with insanely stuff springs).