Hans Gerzlich also appears in English at company events. No wonder, because his humor can be regarded as British. Very British. Dry, directly, absurd. You will like it, your guests will love it. Or the other way around - depending on the level of gage.
Even mixed performances are possible, for example, if the majority of your guests speak German, but a few others may not be bored. Talk to us - in German or English.