SVS-Calc 1.5 spreadsheet for Commodore Plus/4 is now out and you can see a promo video for it here.
It can be downloaded from here.
It looks pretty good. Too bad it doesn't have an 80 column mode like The Last Word.
I don't think it has been optimized as much as the code in TLW but 80 Columns has been done on the Plus/4. Link