I wonder if the DL baggage allowance will carry over, or will you have to pay and go by the Seaborne limits? According to their website it looks like it would be $25 and 50lb limit. Anything over the limit or beyond 2bags is on a space available basis... although it says first/business pax get 3 free bags. Just they all might not show up for a few days
http://www.seaborneairlines.com/fly-.../luggage-fees/

Wonder if DL will add the agreement to SKB as well, since they only have 1x Sat service to there, and not all year.