Wine should come with fonts with the same metrics as the proprietary ones. Note that while the font file is copyrighted, the letterforms themselves are free to

Wine should come with fonts with the same metrics as the proprietary ones. Note that while the font file is copyrighted, the letterforms themselves are free to copy. We already had the DejaVu project recreate equivalents of existing fonts, no reason we can't have the same for the Segoe and Calibri families.