Congrats on your first tin! Next thing you know, you will have several tins opened. It’s a slippery slope now?
I would most definitely jar if you think you will take months. When I first started, a had a Gurka and Peterson blend go dry within weeks. But I was also leaving them in my car, etc. stupid me!
I have around 12 opened tins I am smoking through that I keep in a humidor shaped like this.
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For me, I believe it does help preserve freshness of my tins as I work my way sampling through them. They fit perfectly in it. Since I’m sampling a whole lot, deciding what is cellar worthy, I just don’t want to jar everything I open as I have a lot of jars in my cellar already. Also, maybe it’s just the organizational aesthetics of it.. but I generally work my way through a tin within a few weeks to month. If I really enjoy the blend, it could just be a few days to a week.