Out-of-the-box, besides the lower-profile tritium sights, the SP-01 Tactical has a lanyard loop, a smaller manual safety, and a heavier trigger.
If you would be competitive, buy the Shadow.
Shadow:Im not looking at the tactical just the regular sp01
As in "worried about"?SP-01 .. anything to be aware of..?
http://www.canadiangunnutz.com/forum/showthread.php?t=460412
Differences:
...
Frame - The Shadows frame is cut deeper under the trigger guard and under the Beavertail. Both cuts allow for a slightly higher hold on the gun
...
Firing Pin Block - The Shadow doesn't have one.
Take Care
Bob
Just for those two items I would recommend the shadow over the sp01 unless you can find a heck of deal on an sp01 as most of the other parts are easily changeable over to the sp01. The 'shadow' rear sight will not fit however as it has to be cut to fit.
If you search around I think there are pictures showing the differences in the frames.



























