Its not particularly the cocking slot that bothers me with underlevers, its the additional length of steel hanging under the barrel that puts me off. I find the added foward weight does nothing for my shooting.
I've never actually seen a pro sport in the flesh, but considered one many times as I feel it would really suit me balance wise. The price and odd mumblings about the uncomfortable cocking lever put me off making an impulse purchase on one.
But, I do think if I happened to handle one by chance, I'd have to have one.
Not owned an airsporter since 1982. Once I found german springers, there was no going back for me.
It has to be function over form for me. But maybe the pro sport has both. If I ever get hold of one I'll let you know.
Living a good hour and a half's drive from any major RFD has both advantages and disadvantages.