2 Draw Technique

You can absolutely tongue block bend the 2". Bending is not the product of a specific embouchure... you can bend with all embouchures.

The simple answer is yes. Now some details...

It's common for pucker players, myself being one, to learn how to tongue block holes 4 and above. This area we tend to not bend as much and is greatly enhanced by the use of tongue block techniques like slaps, pulls, flutters, octaves, etc.

I played this way for a long time. As I started to advance and spend a lot of time in 3rd Position, I really wanted to be able to bend the 4, 5 and 6 in a tongue block so I didn't have to switch back and forth... this was the first area I learned how to bend in a tongue block and it helped my playing greatly.

For many players this is where it will stops... they use a combination of pucker and tongue blocking.

If you LOVE classic blues harmonica (Little Walter, Big Walter, Sonny Boys, and all the players that are in that vein today) then the more you can tongue block the better, so learning how to bend 2 and 3 in a tongue block is the next step. I did this in 2005, and was a six-month process until I didn't suck at it, but I knew it was something I wanted to do, so I stuck with it. I sometimes pucker the 1 and sometimes tongue block... it's less critical on hole 1, so make your choice.

From an efficiency standpoint, staying in a tongue block all the time is a winner... a HUGE time-saver to learn early on... and for a beginner a no-brainer, they should no doubt use tongue blocking as their primary embouchure... why deal with the issues of where to switch. You'll notice the majority of classic blues players I've interviewed wished they had done it from the beginning.

So, it gets down to personal choice, but if you love classic blues, then it's worth it. Even if you don't, it's the most efficient way to play.