I came to the field from a slightly different direction; I never studied DP in classes (I was a bio major) but used them extensively in my undergraduate research and later when implementing a few toy bioinformatics algorithms (it's a real joy when it works for the first time!). Even though I've written them a number of times, I really doubt I'd ever be able to spot a DP problem and solve it with that, without some hinting. I do not think it provides useful signal unless you're looking for people who will be writing algorithms.