I'd suggest the plywood blade, tho...pvc can 'shred' if the blade is too aggressive or turning too slowly - like with a cordless saw with a dying battery...(yes, you hear experience here). But, no, pvc I think is probably EASIER on blades than wood...I know when we were doing the plumbing on our house, we just kept the chop saw set up for quick, 2-second pipe cuts and never needed another blade. ;-)
I have a couple of PVC Cutters. They work like a one blade shear with a curved anvil to hold the PVC pipe. Works on pipe up to 1.5 inches.
If you are cutting pipe bigger than that, sawing may be best.
I used a jig saw when I made the freeze cover for the water supply pipe into the house. Found a scrap 6" pipe about 4 ft long, and another 4" pipe over a foot long.
Used my B & D Workmate to hold the pipe, then cut 2" strip from each after cutting to proper length. Held everything in place around the supply line and hose bibb with duct tape and filled with expanding foam - never froze again. Painted to match the brick. Looks better than the bare galvanized pipe coming up out of the driveway into the house, and a WHOLE LOT better than some of the neighboors rag-wrapped pipes. About 4-5 times the insulation of the foam pipewraps sold by the big-box and plumbing stores.