The G2 definitely does glob. That's one of its bigger faults. (Others being that I, personally, prefer a line width between the 05 and 07 options -- obviously this is world-stoppingly critically important -- and that really old ones, I mean really old, tend to get disgusting sticky grips.)
Mostly they're just nice for being fairly rugged and reliable in a way most nicer pens just aren't, for carrying loads of ink, and for being ubiquitous. They're far from perfect. They're just... Good Enough™. And that's good enough!
I do one slightly different, if they carry the G2, they likely also carry a pack of retractable Pilot Precise V5s in a 4 pack of black. I prefer V7s or V10s, but even a v5 in black has a better/softer grip than a G2, does not glob like a G2, has a cool needlepoint that plays nicer for fine writing than a G2, and has a stronger clip than a G2.
The downsides are A) nontransparent barrel B) people tend to steal them more than G2s and C) 80% as available as a G2