If you look at the exploded view it does show a blade clamp knob. (Part # 77) Actually is shows two, but only one is listed in the parts list. With these knobs I'm sure one could use pin less blades.
I know Harbor Freight has a bad image for tools, but I've purchased many tools from there and have no problems with anything I've bought. I have only purchased one "power" tool (a lathe) and that was just recently. Other things have been hand tools, pneumatic tools, bits, blades, etc.
I don't work for them, but I'd consider it if there was one close to me!

Karl