HUcasts and Mechguns, as one who uses a pair... Options

[unitself]

I have heard that alot of PSO'ers don't like this combo. I have always wondered "why"? Do people feel that the HUcast is simply too strong and takes all the exp. away from everyone? Everyone I have ever played with has always done much more damage with their than my mechs do. Not to mention the fact that I stand there for a good three seconds or longer after firing, often getting me smacked upside the head in the process.
I understand about the people with the Spread Needle. I totally get that one. Not only does it exp hog, but it also kills everything in 1/4 the time which in turn kill all the fun. But, I have never experienced that when using my mechs.
So, what's up? I am asking cause I don't want to (I guess) continue to cheese people off when I join a game with my mechs.

[DarkEpyon]

I'll tell you what's even more scary... a maxed HUcast (or any hu for that matter) with a 300d BKB. But back on the matter of playing style, I've seen folks use weapons like breakers and claymores in places like ruins or seabed and hold their own just fine.