Well, to be fair they aren't technically Vikings. Although regardless of that, I still stay putting handlebars on your helmet to make it easier for your opponent to grab you is kind of silly.
Vikings never really did have horned helmets
Typical http://www.google.se/imgres?imgurl=http://www.englishmonarchs.co.uk/images/vikings/viking_helmet.jpg&imgrefurl=http://www.englishmonarchs.co.uk/vikings_5.htm&usg=___n5wiOQbNLxDiqnNsCheZ1R3eBs=&h=267&w=229&sz=17&hl=sv&start=0&zoom=1&tbnid=NIT_7eDNU2Z5wM:&tbnh=162&tbnw=139&ei=Bec-TbicLILysgaQzqTuBA&prev=/images%3Fq%3Dviking%2Bhelmet%26um%3D1%26hl%3Dsv%26sa%3DN%26biw%3D1680%26bih%3D857%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=453&oei=Bec-TbicLILysgaQzqTuBA&esq=1&page=1&ndsp=34&ved=1t:429,r:3,s:0&tx=72&ty=125
And it's fantasy. A lot of tes armors aren't that practical.