Custom Insert Mesh along a Curve Brush:
(can only be used on models with ONE subD level)
create geo however you like
Brush > Create InsertMesh > New >
Stroke > Curve > Curve Mode (otherwise you get a single monkey)
with stroke still active > increase draw size > click on curve
alt+click on the base shape to start a new stroke
============================
Brush > Depth > Embed (to set how far from object your brush will appear)