Yeah, in my mind, that is way more candy/chocolate than pretzel at that point. Then again, I've always been a guy who prefers savory over sweets. So I don't even think of that when I think of pretzels. I'm thinking pretzels that might have different shapes or seasonings. Like those mustard ones from Snyders.
The soft pretzels are freaking delicious too, but they're definitely a perishable item and not probably something you could sell/ship easily - and maintain some quality and consistency. I whip up a homemade batch a couple times a year.
I get what you're saying about not adding everything to candy crave. But I do really like the universal cart option, so rather than listing all the pretzel or licorice types, you can just link to those sites and explain that the sites automatically share a cart and checkout process. This way if they want to investigate those sites they can, without feeling like they're going to have to pay for shipping twice or have to hit a minimum order level. You can even hit them with an interstitial page during the checkout process to say: "While you're at it, consider adding an item to the same order from our sister sites Licorice.ca or Pretzels.ca!"