Really the only reasons to use { -brand-name-ie } are for developers to test what their sites look like on an older browser or if a company has business-critical apps that only work with the { -brand-name-ie } browser.
Ri taq aruma toq nokisäx { -brand-name-ie } richin chi ri b'anonela' tikitojtob'ej achi'el xtiwachin ri ajk'amaya'l ruxaq pa jun ojer okik'amaya'l o jun ajk'aymoloj e k'o itzilenal taq ruchokoy richin ri k'ayij loq'oj, ri xa xe yesamäj rik'in ri okik'amaya'l { -brand-name-ie }.