It took four hours and 45 minutes, but I finished plying the merino/alpaca. I started with a couple of hours this morning and finished up late this afternoon and this evening, unfortunately after the sun had gone down, hence these flash photos. (Is anyone else as depressed as I that it's now dark at 7 p.m.?)
I used up all but the tiniest bit of singles left on one bobbin, and toward the end I was having to move the slider every 30 seconds or so to fit just a little more on the already-full bobbin. Even The Mister noticed how full it was, saying, "That's one full spindle!" when I announced I was finally done. (Okay, so he used the wrong word, but I give him full credit for using spinning terminology!)
I sat at the wheel so long plying this that I got a bit of a cramp in my back, so I'm going to let the yarn rest on the bobbin until tomorrow, when I'll get out my niddy-noddy and find out just how much I have. This yarn is heavy laceweight/light fingering weight, for the most part, and considering just how crammed full of yarn the bobbin is, I'm thinking I've got some good yardage here. Make your guess now!