I love holsters, so some day, I'll get a Sparks - it's just that where I am now in my training, I'm dedicating a lot of funds to tuition, ammo, and gear that I know works....and for me, the Pure Kustom Black Ops Pro is one of those pieces.
I'm new to concealed-carry, but I've carried my XDm9 3.8 Compact since late last March, virtually every day, and aside from a few of my "gun friends," no-one, and I mean
no-one, knows that I carry. My everyday wear? A $5
Old Navy T shirt, untucked, over some
Old Navy jeans (yeah, I'm a slob, but when you're an academic scientist, no-one really cares if you've just fallen out of the pages of
GQ or if you're dressed worse than the hobo on the corner

). Ask my wife if I carry, and she'll say "carry what?"
The extended sweat-guard takes getting used to, but it doesn't compromise the draw if you trained towards it, and offers exceptional comfort even for us guys who have love-handles. My first time timing-in from concealment was this past August, so you do the math: after 5 months or so of training, starting from absolute scratch (my last time on the range, prior to November of 2010, when I started shooting, was some time in 2002/3), I was able to easily meet the old Gunsite standards, and it was using my everyday dress, my everyday holster, my everyday carry gun.
Knowing that I'd be shooting more from-concealment this year, I actually purchased a second Black Ops Pro, so that I would have one that was dedicated for training use.
I've seen and handled a Sparks, and sure, it's an impressive piece, and I'd like to own it to try it out - but I'm not ditching my Pure Kustom like it's yesterday's newspaper, because I know how comfortable it is, and how well it works. Sure, I'll get a Sparks one day, but from everyone who has had both, in the end, it comes down to personal preferences, and Rocky's holsters rank right up there with the best.