Web Dynpro ABAP v/s BSP

These questions are for someone who have extensively worked on both Web Dynpro ABAP as well as BSP in the past.

(1) Will it be worth gaining knowledge on BSP since we already have now Web

Dynpro ABAP platform for web development ?.

Will it help to learn Web Dynpro ABAP if you have good knowledge in BSP ?.

(2) In release 6.0 we have Web Dynpro ABAP and with the availabiltity of Web

Dynpro ABAP do you think there will be any reason for people to go for

development using BSP ?.

Thanks in advance

Sandeep