Slide is currently my strap of choice. I definitely like the chunky style strap and makes for a comfortable carry. The two silver buckles (allows you to lengthen or shorten the strap) don't seem to work as well as I'd like. To me when you lock them in, the strap should not be adjustable length wise at all. But mine still can be adjusted somewhat. It's just not a solid lock IMO. I don't think it's a problem with my particular strap, I think that's just how the buckles work. The anchor points are pretty innovative but I do have concerns of the kevlar or whatever material that loops onto the camera. I'm sure they are strong but they just look like a weak point to me. Overall it's the best strap I've used thus far and I've had quite a few, including a pair of blackrapid straps.
The Capture Pro is great too but if you want to attach it to a real backpack strap then go ahead and order the extended bolts. You will need the extra length to get it onto the thick padding of the shoulder strap.