I've a question for this talented bunch of DIY sewers...

On the recommendation of sites like this, and occasional chance comments here in the forum, I got a "walking foot" (a.k.a. dual feed) for the sewing machine. Here's the question...is there any reason to not use it when doing some tasks that don't involve nylon-on-nylon, e.g., putting bias tape along an edge? Looking for the voices of experience here with respect to any downside of the gadget.

Tonight I plan to sew webbing and hamock body for the "cable" supports of my bridge hammock version 0.1, and don't know if the walking foot will be a help or hindrance. I will surely try some scrap lengths first.

thanks
Grizz