Probably, BUT you need to use it a few times before buying one. Might suit you just fine the way it is now. Personally I like the tube, for some, they do not want that much smoke. Simply a personal taste decision. I agree with Greg, you may add a different flavor with it. Good thing is they are cheap
I’ve never understood the need for a smoke tube. My 340 creates an insane amount of smoke. I usually use Bear Mountain pellets or Lumber Jack. Tried Knottywood, but had really bad results. Bear Mountain is my go-to pellet brand and if I smoke something at 200 or 225, I get the most perfect smoke flavor. No tube necessary.
I just got one that I have yet to try out. I mainly got it for doing hotter cooks, like poultry, when 375ish doesn't produce much smoke. I also want to try out using it with cheese and salmon. For $14 bucks, I figured I couldn't go wrong. If nothing else, I can plop in my gasser.