In principle yes ! I wouldn't need you to do a type rating . I would check ride you myself and do emergencies . Probably like you , I have flown many different types of helicopters and have never found one yet that doesn't fly just like all the others . As an example I got in a Bolkow the other day . No instruction and from lift off flew it as smooth as I would with 100 hrs on it . Only training I would need would be specific vices like tucking into RH turns . On fenestron machines it would be some training on pedal input .
On 350 it would be servo transparency.
Luckily I haven't found any vices on the 109 , so yes I am certain you could fly it very safely with only an hour or two practice . ( but you would need to do a bit more before taking passengers )