I played around with a similar, but different, set of wipers and couldn't shorten them in a satisfactory way. These look a much better option.
If necessary it would be relatively easy to shorten the main rail and drill new holes to rivet the blade support closer to the centre. This would allow the blade to be cut shorter.
New rubbers could be fitted when necessary because they seem to use a standard type of rubber such as used by Bosch.