Agreed.
For now.
But, if we go with the SK boats and the relationship turns out to be a solid one, mutually beneficial for both sides. Solid investment on both the WC and EC in terms of a supply/maintenance facilities and job numbers and lets say the SK partner with Cameco for their uranium or with Ontario Power for nuc knowledge going into their new boats.  Then 20-25yrs down the road when it comes time to begin the planning to replace our existing 12 SK conventional subs, we very well could go down the path of SK nuc boats, conventionally armed. 
Please remember we were well down the path of getting 12 nuc subs under Mulroney in the early 90s.  If the world continues down the path of its current ugliness and the US continues to move away from being our crutch, tough decisions will need to be made 20-25yrs down the road. 
If the SK's build nuc boats, I'm going out on a limb and will predict that Japan will be next up and then the Germans.  Who will be left to produce us a conventional sub in 25yrs?  The Swedes?  The Spanish?  India? It very well could be that the entire western market of conventional subs will be dried up and gone 25yrs from now.