Tongue Blocking hole 1

Hello David, 

I'm a new student and am really digging the lessons.  I have a question regarding the 1 hole.  I find it easier to actually engage the 1 hole by going to the end of the harp and using no tongue blocking (in other words, I do not tongue block to the right of hole one).  Are there any potential problems with this approach, or is it a satisfactory way to engage the 1 hole blow and draw?

Brett