It has it's advantages, as it tightens a panel over time, so it can keep the tent pitched tighter. The key, is to find shockcord of the appropriate tension for your tent, and to pull it tight or extremely near tight, so there is little give , but much more take. IMO it really works better on non seam tie outs, as seam tie outs have the stretch limited anyway.
Snowloads are extremely difficult to mimic, as almost every snow is different. I live in an area where we get substantial (250 + inches some years) snow, and I test a lot of single pole tents and tipi's to determine failure.
Yesterday and last night it snowed, but it was the type of snow that started wet, so without maintaining it , it would stay on the canopy. I let the snow accumulate over night, then measured the carbon fiber center pole deflection (very minimal), brushed the snow off the tent, then put the snow in containers and weighed it , to get an idea what weight was on the canopy. The weight on the canopy from the snow, was close to 120 lbs accumulated on the canopy, in fact probably more if I take residual ice into account.
The best way to minimize snow load on center pole mid / tipi type structure is to have a place for the snow to go, like a trench if snow camping, or a short sod skirt style mini wall