The resin that holds tulwar hilts on is actually rather good at its job!
Solid with just a little flex, strong, lasts indefinately and acts as a good shock absorber.
Easy to repair, easy to replace, easy to swap out blades, secure and concealed in the hilt......
As for the fencing style of the Tulwar....
There are undoubtedly significant differences in the fencing techniques of a 'shamhir' or European Sabre type hilt and a narrow wide disk Tulwar hilt.
These are clear whenever we see anyone practicing with a tulwar:
Tulwar moves - single sword.
Tulwar moves 2 swords
When we think of the grip for instance, the sabre hilt allows for a 'looser' more variable 'fluid' grip, whereas the tulwar hilt needs a more constant firm grip. Consequently there is also a significant difference in the range of available wrist movement which would affect the technique, making the cuts more 'pull' than 'push'.
I've tried to illustrate the problems in thinking about fencing with a tulwar in terms of 'european' type sabre moves with a few pictures showing the difficulties of a full lunge with a tulwar: