You might be able to multi task your shop vac s flexible hose as a gutter cleaning attachment.
Diy gutter blower attachment.
With this tool the whole process becomes simple to do whenever.
If the blower nozzle and the shop vac hose connection are relatively compatible in size it is certainly the cheaper option.
In fact you can make your own diy leaf blower gutter attachment fairly easily.
The two elbows cost than 5 for both.
The assembly slides over the blower spout and is very light.
Rid yourself of gutter clogging leaves dirt and debris without ever having to set foot on an unsteady stepladder or hang dangerously from your downspout.
Just slide the pieces together and slide the end over the blower.
Make a homemade diy leaf blower gutter cleaner.
Using an electric toro blower years ago i built a similar cleaner from rectangular vinyl downspout and elbows.
Keep your feet firmly planted on solid ground while you blast your way to clean clear gutters with the sun joe blower joe gutter cleaning blower attachment.