The actual rush for this train is between Delhi - Kathgodam - Delhi. So berth multiplexing would take place only between Jaisalmer - Delhi - Jaisalmer.
However coming to quota allotment, DLI being a major station normally gets quite good allotment (and also due to being former source/destination point for this train before its extension). Booking from JP which gets a less allotment than Delhi wouldn't have been wise I feel. Will have to observe some more PNRs originating from Jaipur, Jaisalmer & then come to a conclusion.