RPN re-purpose of LCD calculator?

[Joseph_21sv]

Ever since my own threads on landscape formatting an alphanumeric RPN calculator, it has been a pet idea of mine that an algebraic LCD calculator might be merely tricked or repurposed outright so that it operates in RPN. Besides, algebraic LCD calculators have, in effect, have been produced that use ENTER/RETURN/EXE as a label swap or co-label for = as long as the LCD has been the standard display technology for calculators (scroll to the Pocket/Portable Computers section of http://www.rskey.org/CMS/index.php/minor...blog&id=10 for a list of early algebraic calculators which swap RETURN for =), so there are some which invite an RPN repurpose as designed. Of course, anything before the Casio fx-6000G of 1985 is not, strictly speaking, a calculator, but rather a portable version of a full-fledged personal computer (in a limited sense at least). Given that algebraic LCD calculators already exist which specifically have the = key (co-)labeled ENTER (the HP 9g can even type an equals sign by ALPHA+ENTER), has anybody else conceived of RPN repurposing one of these?