I have spoken about this before and have plans for the same - making the touching side bars all way on my next frame batch.
Here is a good demo and a brief discussion.
Jump to 8:30 and watch carefully (ignore or turn off audio).
The deep Dadant frames with solid 35 mm side bars (1 3/8") - not an issue.
Many presume issues with the frames propolised together - not necessarily so, as we can see.
These AMM bees in Ural region of Russia (similar to zone 2-3 of US).
Maybe the Caucasion bee types will create more issues; donno.
I have more similar independent videos about running on wide side bars - also no issues.
For sure, making the frames is much more simple how it should really be.
Here is the relevant comment of the keeper, he says:
...I transferred all my bees on 300mm frames (GV: deep Dadants) onto this side bar type; I like the wintering and spring development a lot. It works as a double-wall. First - it is warmer, ... (then some theorizing of better mite situation due to higher CO2).... The width of the side bar - 35-36mm; the bars are touching.