"Best" way to hide Edit/Insert command button in Detail/Grid views per UserRoles?

I've seen several ways to do this:

http://www.asp.net/Learn/security/tutorial-11-cs.aspx

Talks about changing them into templates and then using a FindControl to set the visible = True or False.

 I've seen other options that create a commandField object and then set ShowEditButton = True or False.

 Is one way better than another way?

I thought using FindControl caused a bit of extra work on the server to actually find the control you want?

I take it there isn't a way I can address my detailsView or gridView directly and say Enable or Disable EDIT or INSERT on the data binding event? (Or some appropriate event)

 

Thank you
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