Glad the large Flo satchel is working for you.I just got one and I doubled the strap for shoulder carry. I didnt dare try it crossbody. It doesnt feel too bad. It feels lighter than the domed buckle satchel, with the same items inside. Also it’s not an awkward carry. So far I’m really liking this size. I thought it would be too big for me, but I find it perfect. I wouldn’t try it on all day outing Tho. I’d switch to a backpack. I can not do crossbody, I have neck issues.
I don't know the relative weight of the 2 bags, but my guess is they are withing a few ounces of each other. But sometimes, the distribution of the weight can make a difference.... when items are close together inside
a handbag the weight seems heavier to me. My stuff in a tiny, light weight bags seems
heavier than the same stuff spread out in a larger bag. It's the old pound of feathers vs pound of sand comparison.... the sand takes up less space and seems heavier, but the
feathers and the sand weigh the same on a scale. So if the items in the satchel are spread out differently, and the weight of the bag itself is distributed differently,
one of the bags can feel lighter or more comfortable on the shoulder.
I also find that with a longer strap, whether carried by hand, on the arm, or on the shoulder, a bag feels heavier. It's as if the extra strap length pulls the bag down
and adds to the swing which makes it feel like the bag weighs more. I don't know
if there is any scientific principle here, but it's been my experience.