Dear All, Dear Mark,
Belarusian Classical Grammar (sometimes called Tarashkievitsa)is used by Belarusian Language Society [http://www.tbm-language.com/eng/about.html], by Belarusian PEN Centere [http://www.pen-centre.com/eng/pen_about.html], by most important belarusian writers and free media (newspapers, magazines, radio) to name just some: Nasa Niva Newspaper [http://arche.home.by/], ARCHE Magazine [http://arche.home.by], Radio Free Europe / Radio Liberty [http://www.svaboda.org], by main belarusian political parties and Non Government Organisations: Party of Belarusian Popular Front [http://www.pbnf.org], United Civil Party [http://www.ucpb.org], Viasna'96 [http://www.spring96.org], by Civil Society Center [http://www.cacedu.unibel.by/cscsc/], by belarusian Dictionary Project [http://slounik.org], by Litara.net Webzine [http://www.litara.net], by Belarusian Legal Portal [http://www.praunik.org], by Belarusian Students Portal [http://studenty.by] by many belarusian bloggers from LiveJournal Community and in particulary by Rydel's blog [http://www.br23.net/] wich won this year the 4th National Belarusian Web Content Contest, organized by prominent belarusian portal TUT.BY [http://www.tut.by].
All of above mentioned organisations and individuals use CLASSICAL grammar.
Most localisation and internationalisation job of free and open source software (GNU/Linux)in belarusian is done according to classical grammar.
As you see, it's not just "some of belarusian nationalists" which want to return to older belarusian, but intellectuals, writers, journalist, students, politicals, translators and policymakers who use it.
It is not true, that "By sheer chance, the proponents of the alternative style were the first to arrive at be.wikipedia[...]" this is because major part of BYnet (belarusian part of the web) uses classical grammar.
In such situation I belive it is inappropriate to create an alternative wikipedia for authors who want to write in official, imposed by soviet regime grammar rules (which are still obligatory).
If someone want create article in "Narkamauka", should be allowed to do so in the belarusian wikipedia.
PS Sorry for my English.