Spring <sca:property> tags must point to classes, primitives are not permitted

Since the Spring <sca:property> tag is a bean (per spec) it must point to a class implementation. I can imagine situations where a customer would prefer to point to a primitive type, such as int, short, boolean, etc. Since the spec explitily mentions that the sca:property creates a bean, this may need to be addressed at spec level.

Also, since constructor-args can use primitive types, if a user doesn't specify explicit spring -> sca mapping tags, is it possible to create primitive type sca properties via this mechanism?