As long as the steel has not been damaged by heat at some time this should hold as fine an edge as any other older razor. Mine can go 6 to 10 shaves before a touch up is needed, granted there are a lot of variables involved but you should have no problems with edge retention.

One thing I found works for me on these types of blades are narrower stones. Yes it cam be done with full sized stones, but for me it seems to go allot smoother with 2" wide stones.