I've never had a blockage issue with the mesh filter attached to either the end of a normal diptube or to the end of a floating diptube. I've keg hopped with various quantities of pellets, ranging from 20g per keg all the way to 100g+ in at least 10-15 batches.
I prefer to keep the process as simple as possible and would prefer not to buy equipment that doesn't contribute to improvements. As an example, a hop spider basket was a useless purchase and I never use it. Would the stainless steel hop tube be in the same category? Other than preventing the hop material from blocking the poppets, does it provide any other advantages that would make the beer better?
In other words, can I expect any improvements from using a hop tube versus using a filter?