Yes, there is always room for multiples of any archtype on a team.
Well, the CAN be... it really boils down to how the GM does things. If the GM is making the Matrix, and Matrix options a very minor part of his game already, I doubt he is going to change that to make it more interesting for a Decker - techno combination. (as generally, the Matrix is the weakest part of most GMs knowledge base), BUT he could expand the matrix play more if there are more characters that can do something in the matrix.