Rich - that's it exactly!
This is the paper I started off using, only in 9x12 size pads. I bought it on the advice from another hand coloring artist. I started in oil pastels as another hand coloring medium for my B&W photographs, and this paper is excellent to print on - I can lightly print my photos on my Epson photo printer and then hand color with OP's. (Standard photo oils do NOT do well on this paper.) I kind of got away from printing on it, trying to learn how to better sketch instead, and got hooked on OP's in general.
I used to buy large sheets of Arches HP and CP 140 lb watercolor paper and rip them down to size when I was doing Polaroid image transfers and emulsion lifts, gave a nice deckled edge. I wonder now if Arches is kind of re-branding their CP papers for these pads, since the texture and weight really is terrific for oil paints (excluding photo oils). There's no mention of it being a "watercolor" paper per se, but I'm betting it would take watercolors equally well.
I'm so happy you like it! I've been using cheaper papers for awhile now, so as to save $$ while I'm still such a beginner - but I also love the weight and texture of this paper. It takes turpenoid washes, too, without any bleeding through. Very tough stuff.