Someone "who rides for workouts and distances for fun" shouldn't be particularly encumbered by a triple, and it may come in handy if you have some serious climbs in your vicinity or you want to spin instead of hammer on upgrades.

It's a nice frame, and if you still love it in a couple of years but have decided you really don't want the triple, you can always replace the stuff then.

That's one answer.

Another answer is that buying a road bike from a shop that doesn't specialize in road bikes could be a mistake. If the shop is dropping road bikes, chances are it's been quite a while since they were really proficient at supporting roadies. One of the reasons for patronizing bike shops is because of the support and service they provide.

But the fact that you're asking the question at all makes me wonder if you'd already decided you really wanted a double. And I think that buying a bike that's not perfect in every way might be a mistake.

RichC