I have a deuce with an S280 in the bed. From what I can see, you have a petty good looking winch deuce with a shelter that has more volume than an S280 inside, but if it is not insulated will be very uncomfortable in any but moderate weather conditions.
I had an option to swap for a shop van body off a deuce and kept my shelter for two reasons.
1) I can have the shelter pulled off by a friend with a roll back and use my truck as a straight up cargo truck and it is pretty easy to get the shelter on and off this way. Additing to this benefit is that I can use the shelter off the truck.
2) The S-280 has 2 inches of high density foam insulation making it comfortable and pretty easy to control the temperature inside. Much easier to heat than a shop van body in my opinion.
You can take whatever path you want to, but you also need to identify what you want your deuce to do for you and whether this truck fits the bill or not.
Just my two hundredths of a dollar's worth
RL