So, Journeyman.
In Big Money, it seems alright. Early on, naming Estate gives you 3 treasures, which is better than Adventurer, and that's a $6 card right?
But seriously, Journeyman is probably going to be like Sage, in that it is awesome early on when you can avoid Estates and worse later when you have Duchies, and Provinces to dodge. Or you could name Copper, which is a good play some of the time. Need some good deck tracking to get full usage out of it.
However, in engines with low trashing it seems fantastic. If there's Estate trashing but not Copper trashing, naming Copper lets you draw 3 engine pieces. Kind of like Sage actually, now that I think about it. Although you can't guarantee the engine part you draw, you can at least get a good idea of what cards you'd want. If there's good trashing, then, well, it'll probably be more like +3 cards, but the ability to only draw terminal draw or +Actions makes it better than that. I for one really want to see Apothecary-Journeyman, because that sounds quite nice.
Definitely gets weaker with Shelters out.