Puzzle #376 - Out of Character (Killer Skyscraper Sudoku)

Uhhhh... yeah that's a variant. Killer Skyscraper Sudoku. The rules are as follows: inside the 4x4 grid, place a number from 1 to 4 into each cell such that each row, column and region contain each digit once each. Additionally, each cage must not contain a duplicated number. Any digits placed outside of the grid act as skyscraper clues on the grid.

puzz.link interface (cages are shown by same number links) penpa interface

Yes, I'm aware this is very atypical for my constructions. I was curious if this sort of construction would even be possible, and it was- maybe I'll try a 6x6 with this ruleset? It's pretty interesting.