Usually, they cum in my mouth, because I like that.
If the cum tastes good, I swallow. If not, I donīt.
But I must say that when I went with the same shemale --I like have sex with always same person, if posible--, I swallow always.
Except if she is white. The cum of white shemales is horrible. The cum of black shemales is fantastic (even if it is a little bitter).