I think some folks may be mis-reading what you are doing with this bass drum - as so often "wide open" means two heads, no holes, no muffling. Exactly the opposite from what I think I'm seeing in this picture - gigantic port (almost making the drum single headed) and some kind of pillow (an hourglass type?) with a pinstripe, PS3, or what? batter.
I wouldn't be at all surprised if it sounded great!
Oh and I'm with you on the SK1's and SK2's - totally worthless for me. Every time they've shown up on a backline/rental kit, I've had to literally pull the muffling off of them in order to restore some upper mids for FOH to work with.