Ash and Gary as Traveling Partners

Would you have wanted Ash and Gary to be traveling partners at some point in the anime before Gary stopped being a Pokemon trainer to become a Pokemon researcher, after Gary stopped being a jerk and he and Ash became more of friends? I think it would have been interesting since they both had different approaches in their training and seeing their dynamic together for an extended time could've been compelling.

may as well make my 3,000th post in Pokemon Anime anyway...

No.

And here's why I don't. Gary and Ash have always meant to have been rivals. Having them travel together wouldn't really grow him as a character, in my opinion. Though, seeing the two work together in Sinnoh once was nice to see, but I wouldn't have wanted Ash to travel with him, tbh. The point of rivals is for the opposing trainer to bring the best out of you, and that's what Gary was for up until his "departure" in the series. Maybe now that he's got a scientist job, he could tag along for a tiny bit in Alola but it's quite unlikely.

As much as I love Gary, it wouldn't be right for him to be a travelling partner for Ash as his primary role in the show is to be his rival. That being said I would like to see him tag along for a few episodes just for a few laughs between him and Ash and to see them bring out the best in each other.

They would argue like everyday

Well to be fair, Ash argued with Misty regularly too as well as with other companions.

That be interesting