How comfortable is all that with those Velcro straps? I'm looking into upgrading the armor in the knees / hips / elbow area and I'm interested in this. I've also seen some pull on type knee / elbow guards which may prevent uncomfortable feeling from the Velcro straps shown here. I think BlueStreak may have some but can't remember the name at this point.
The knee guards suck without something underneath the straps. I have a couple of microfibre cloths I wear underneath the straps behind the knee guards. With those on I can tighten the knee guards up so they are nice and snug. The knee guards vent air so they are surprisingly comfortable. I feel much safer with them than without them.
The elbow guards are pretty comfortable and I wear them without anything under the one strap.