I love the boulogne so much! Sure I can list out the pros and cons so far! I've only owned the bag for almost 3 weeks but I've been using it everyday!
Pros:
1. Lightweight
2. Durable and carefree - I haven't tried this but apparently the noir version can handle snow and rain pretty well
3. Size is perfect - not too big, not too small. I usually love smaller bags but then I really have to think about the bare essentials - with this bag I don't have to think. The shape of the bag makes it easy to carry on the shoulder and also crossbody. It fits everything I need easily with lots of room without looking like a bigger bag. I still carry very little in the bag itself as if I were carrying a mini bag. I like that I don't have to worry about playing tetris with the bag and I can easily carry extra stuff that I need to like my sunnies or my husbands wallet etc. To me on my frame this feels like it's is a smaller bag too not a medium sized bag. For reference I'm 5'4: and 118 lbs.
4. Can be dressed up or down really easily! I've dressed super casually with this bag and I've gone to brunch and dinners and date night carrying this bag with a fancier outfit and it transitions super easily! It's literally replaced like 80% of the bags in my closet. No joke.
5. I think this bag would be great for travel, it has a double zip so if you wanted added security you could lock the zips if you really wanted to with either a lock, bag charm or scarf
6. STRAP! Omg the snap strap is so amazing! I love all 3 of the lengths (shoulder, mid shoulder and crossbody) and I love how it adjusts with snap closures! It keeps the strap really sleek without worrying about excess strap that you usually have to do deal with with a regular buckle strap. I think it's my favorite feature about the bag.
7. It has a sidepocket inside that can easily fit an iphone 12 pro or a card holder - I really don't need that much organization in smaller bags but having a separate place for my phone is always a plus.
8. It has a D ring on the strap where you can hang charms

I'm obsessed with that lol
Cons:
1. The dark interior might make you feel like it's a black hole, but I haven't particularly found it to be an issue but I've heard others complain about it.
2. Quality issues with the hardware or bag - I would just inspect the bag really well because generally LV's quality has kinda slipped lately. I've also read about how others have returned the bag because of some of these issues. My bag actually had a slight problem with the strap hook but they replaced the strap immediately for me so it wasn't a big deal. I would just say be careful here. But the bag itself is amazing and worth the risk imo lol. Also the pochette metis had hella production issues but that clearly didn't deter the masses in the end lol
That's all I can think of for now! Hope that helped

Feel free to ask any other questions