You may or may not have a PCV problem with no baffle, but it's worth the gamble to try.
I run chrome wedge covers on my truck with no baffles or issues and have on others, I just put the grommet right over the shaft where there is no rocker. You don't have that option, but it is very close to where a stock hole is.
Additionally, with adjustables, you don't have a ton of oil there compared to oiling hydraulic rockers, what oil is there goes down, not up.
Will it suck some in? Maybe, maybe not, but I have seen a few do very well which would likely have me try before I changed something