Late to the party, but, I seem to be the only responder who has stored tobacco in both screw-top (aka Ball/Kerr/Mason) and bale-top (aka clip-top) jars long-term (up to 10 years). They both work perfectly when sealed properly. Either will fail when not. In my experience, it's easier to open/close screw-tops, (and there are nifty gizmos to partially vacuum seal the replaceable lids), but clip-tops make a great seal without needing the gizmo. In the past 10 years, I have had 3 screw-top jars leak so badly the tobacco turned to cardboard. Never had a clip-top fail that bad. Besides the obvious issues of (A) how carefully I cleaned and closed the sealing surfaces (or not), and (B) storage location, (temperature fluctuations and sunlight exposure). there is the issue of (C) FERMENTATION - which causes positive pressure inside the jar. I suspect the clip-top jars handle this better than the screw-top. Maybe they can re-seal better after a "burp", or simply hold it in better. I don't know exactly why, but over the years, I have come to trust the clip-tops more.
For both open selection shelf and long-term storage of bulk blends, I currently use mostly clip-tops. Tins I cellar in the tin. But, bulk I cellar in glass, tightly packed without much air, and not using the vacuum gizmo. The main thing I've learned about cellaring bulk in glass jars is to keep them out of direct sunlight and temperature fluctuations. I don't think any would've leaked if I'd been more careful.
Regarding brands of clip-tops, I have over 100 jarred tobaccos, both KILNER & FIDO. The older Kilners are great, but lately, the FIDO are better quality. ...just sayin'