Friendly is not inconsistent with aloof, and aloof isn't a slam. Some people probably even find it sexy - it's a lot of J. Lo's appeal, despite her management's attempt to make her just "Jenny on the Block".
It is, for example, telling that you haven't actually booked an appointment with her.
I remember a year or so ago when I saw Lisa in the HFH lobby and she seemed very, very bitchy in general. Several months later when I finally booked an appointment with her, she was actually quite warm, and admitted having been bitchy in her first few months on the job.
The smile in the front lobby is the easy part of the sales job; what's in the room is what counts.