The cloak would still be in effect, though I can consent to the blade giving off enough heat for it to register with someone with thermal vision, or other advanced senses, but where I ended it he had literally created the blade within the few seconds it would take before he made contact with LeeRoy's character. 

As for the heat of the blade itself, it is first of all made of a very heat resistant alloy, and secondly the material that comprises Almeiden's armor is manipulable in any state except the one I noted in his cs, so even if under normal circumstances the blade might bend, he could conceivably force it to hold its shape.