It's all around very weird, probably doubly-so for non native english speakers.
However that works on several levels, a steady even trickle of events through to you, plus when you say it, it still sounds like ventricle. Eventrickle.com is available too.
The only issue is that Eventrickle is associated with IV drips and medical products. I guess you could turn that into an amusing strap line. Eventrickle.com - drip feeding you the best events info.
Anything ending -icle makes me think of icicle anyways. Not quite as bad as Event Testicle, but still!
I'll do a bit of research and throw a few avail event based domains your way.
How about focussing on the benefit the site delivers - "Invitem" / "Invyta" / "Invitemall"
- Ben Elton, "Gridlock", paraphrased.
The name of your startup is definitely lower on the list of priorities when preparing to launch. I noticed eventyo.com is available. Just register something simple like that, and get back to work.
Coming up with a non-word name sounds like your task here. The word "event" doesn't portmanteau up well with anything and it doesn't contain comfort phonology the way, say, "blackberry" does.
If you have explain it, then it's too complicated
If you're going to go the pun route it needs to be something easy and, as much as I hate to say it, dumbed down.