Jacklines (vs jack's line)

[JohnV]

I'm making my jackline (or possibly lines) of Amsteel Blue. They'll run along either side deck of my 33' cruiser, from the sbd c'pit coaming, around the (round) anchor bit, back to the ps coaming.
I'll tension it with lashings through a sailmaker's thimble spliced to one end.
I'll protect it with Yale dacron cover where it crosses the foredeck and wraps around the anchor bit.
Here's the question--is there any advantage to my making it in two parts, vs. in one, as above? Then, each half would have an eye splice foreward for the anchor bit, and lashings at the aft end.
In favor of one part is simplicity: half as many eye splices.
In favor of two parts, is less stretch, though amsteel won't stretch much once the constructional stretch is out of it.
I can't see where either method strains the rope more than the other.
Does anyone know of a reason I should go with one way vs the other?
Thanks for your input and ideas.
John V.