I do not have a Delica, but I have a Salt 2 wharnie, which I think is the same basic handle as the Delica. I have SE Rockjumper.
I think the main difference between the 2, is the handle. the Rockjumper fills the hand amazingly well. My hand feels relaxed. Salt 2 being quite a bit smaller in the handle, requires that I pay attention to holding on to it. I wear XL gloves, for reference.
I honestly like VG-10 more than LC. Having had VG-10 from the 90's, I've never seen it rust. I feel like VG-10 holds an edge a little better and sharpens faster and easier on the Sharpmaker. I have no experience with SE LC, but I do know that SE VG-10 is amazing in that the serrations protect the valleys from wear and you can really shred through tough material recklessly. I've never had it chip, but roll a bit and be easy to clean up. Now I don't know why I wen toff on the 2 steels, since you did not ask, but I'll leave it anyway...
Back to Delica vs Rockjumper...I'd go with Rockjumper if you are looking for a workhorse. Delica if you are looking for lightweight slicey.