I’m sure you could use your swift but my only caution is to make sure it doesn’t start spinning. Hopefully you have a way to slightly tighten it so you can concentrate on winding your warp under even tension.

Open the skein and place it on the swift. You will see white ties used to keep the skein in order. When you (carefully) cut those off, one of them will be tied to the end of the skein.

Yes thanks! that helps. Still, I find one tied to both ends.... Can be confusing which to wind with. I suppose that depends on your swift.

I usually find one unwinds more easily than the other based on the way the skein is placed on the swift, so choose the easier path.