Ok you got me going on the Lemon Blue so I got to lookin in a OEGB book I have and this is what I found.
Lemon Blacks and Splashes are often valuable if mated right.. The light colored Brown Red or Lemon Black mated to a Splashes produce Lemon Blues if the former are Lemon Blue bred. You...
I would say you would get some Lemon Blue and (maybe) some sports. They might not be like him but they would be a sport... If you had a White or a Red Pyle hen in with him you might get some nice Lemon Pyles with some time and breeding..
If you can catch DT on here you might want to PM him...
He looks like a Sport to me..
Here is a Picture of a Lemon Blue Sport.
http://www.bantychicken.com/cgi-bin/OEGBCA/mods/usergallery/index.cgi?action=showpicture&album=1&id=6&albumname=Sports
And here is a Picture of a Blue Red Sport...