[NTG-context] \uchar and italics question

Hi all, Due to the nature of the font I am using (which has horrendous looking combining diacritics), I have to call the unicodeglyphs directly through the \uchar command. Which works fine for the regular face. But I am unable to get the italic glyphs via the same method. So {\it \uchar{1}{01}} renders the 'normal' regular glyph. Could somebody help me out? Sjoerd