Sure, it won't pull as hard in 4th on a hill with 4.10 as it will with 5.14, that's expected.
In my experience it still does just fine, I once passed a semi truck headed up a good hill on I-64, 4th gear, probably 55-65 MPH. That was flat out and didn't need to down shift.
Other steeper hills on local roads you'll down shift, but not always, and I don't see that as an issue.
There will always be hills you have to down shift on, depending on how steep, long, and how fast you can or can't go.
I say go for the swap and don't look back.
If you drive along in high gear and absentmindedly press in the clutch and reach for one more higher gear... It means you're not geared to fast.
I still do this with 4.10 axle gears sometimes.. but not all the time like with 5.14.
