Yes, that's consistent with a number of us who report operating with* a
regular distinction between non-back vowels, after which the L is pronounced
([I] as in milk and film, [E] as in elm, [AE] as in talc (= talcum) and calc
(= calculus), and schwa as in hulk and sulk) and (some) back vowels, after
which it isn't (open o as in balk and talk, [a] as in balm and calm). For me,
as mentioned, [o] sometimes wipes out the following L (as in the 'folk' words
and 'yolk') and sometimes doesn't (Polk, Volks(wagen), Tolk ['Tolkien groupie']
and so on).
Larry
*at least in my case; I probably shouldn't generalize