In the United States, the surname
Schuyler is normally pronounced the same way as
Skylar or
Skyler. There was a
Schuyler family that was very prominent in the early history of New
York State, which was originally settled by the Dutch. There was a Vice President of the United States in the 19th century named
Schuyler Colfax, named after this family, and his given name was pronounced that way.
http://bioguide.congress.gov/scripts/biodisplay.pl?index=C000626
The spelling
Schuyler was in regular use for the first name before the alternatives
Skylar and
Skyler became common. There doesn't seem to be any reasonable objection to me to seeing
Skylar and
Skyler as modern respellings of
Schuyler.