rtag/co versus co/tag

[RR]

Assume src is a large, mature source tree with lots of tags, branches, removed 
files, etc.  

1. Would either of the following command sequences run noticeably faster than 
the other?  

2. Other than the fact that Option 1 checks out a static tag and Option 2 
checks out Trunk, would or could the src tree look any different in either 
case?  

Option 1: 

  cvs rtag foo src 
  cvs co -r foo src 

Option 2: 

  cvs co src
  cvs tag foo src

Thanks!