I know they make dual bong/dab rigs but IMO it would be a PITA to keep clean.
For bongs, you want the smoke to go thru a longer diffusion and/or filter through ice.
For extracts, you go for less diffusion to retain terps.
Shop around and I'll bet you could find one for each purpose reasonably priced.
I picked these two up for gifts but kept them because they function better than my expensive MAV recycler. (messy pics. we only smoke in our cave)
The recycler in the back cost less than 30 bucks and functions like a custom piece. If I do a dab, that's the one I reach for.
The teal one was inexpensive and works well too. I found both on the same site as in your post.
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I couldnt find a full-size pic of this one but it shows the shower head and the little oil collector pocket thingamajig. That one had the worst pull/drag of any rig I've ever used. Gave it away after the first use. Those shower head diffusers need to be done with precision or they suck. (literally)
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Lastly, a good banger. (they don't always include them and its good to have extras) I dont do dabs very often but when I do, I prefer really low temps.
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*this precludes Tangs midnight ramblings*
Hope it helps some.