You can use the teleport homer Calgar has as described (see its description on pg. 101 of the codex). Generally IC's and special characters don't lose the use of any weapons or equipment when they join another unit. Usually it is a special rule that might be lost (and sometimes gained). These are detailed in the universal rules section in the BRB (starting on pg 74), or with the special rule in the codex. If a weapon/equipment item usage is lost (can't think of any examples off hand), then it would be stated when the weapon/equipment is described in the codex.
Remember that if Calgar isn't on the table at the start of the game, then his TPH can't be used by other units coming in the same turn as him.