For daily concealed carry, an H&K VP9 IWB holster is surely the best method. You get easy concealment of a service-class pistol. However, you may not get a comfortable carry unless you select the right holster.
It would also be good if your HK VP9 concealed carry holster offered a good fit and a retention level that you prefer to carry with. That gives you confidence in a carry holster’s security, which along with comfort is crucial for you to be able to carry with the holster every day.